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Posted to reviews@spark.apache.org by mpjlu <gi...@git.apache.org> on 2017/08/15 07:11:24 UTC

[GitHub] spark issue #18899: [SPARK-21680][ML][MLLIB]optimize Vector compress

Github user mpjlu commented on the issue:

    https://github.com/apache/spark/pull/18899
  
    I have tested the performance of toSparse and toSparseWithSize separately.  There is about 35% performance improvement for this change. 


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